geryi, Knodus Lima [F. C. T.], Britski [H. A.] & Machado [F. A.] 2004:577, Figs. 1-2 [Copeia 2004 (no. 3); ref. 27909] Rio do Peixe, tributary of rio Cabaçal, fazenda Entre Rios, at the bridge, 14°55'00"S, 58°27'24"W, Barra dos Bugres, Mato Grosso, Brazil. Holotype: MZUSP 83354. Paratypes: FMNH 112958 (1), MZUSP 78863 (28, 2 c&s). •Valid as Knodus geryi Lima, Britski & Machado 2004 -- (Ferreira & Lima 2006:636 [ref. 28919], Esguícero & Castro 2014:47 [ref. 33506], Thomaz et al. 2015:Add. 5 [ref. 33893], Menezes & Marinho 2019:16 [ref. 36822], Dos Anjos de Sousa et al. 2020:582 [ref. 37361], Deprá et al. 2021:24 [ref. 38180]). Current status: Valid as Knodus geryi Lima, Britski & Machado 2004. Stevardiidae: Diapominae. Distribution: South America: upper Paraguay River basin, Mato Grosso, Brazil. Habitat: freshwater.